Sorry for not being more specific, yes I'm a security guard lol. I work graveyard at this job (11PM to 7am). Again, I didn't think about getting multiple batteries, but I don't know how I would charge them at work, or at home while I'm sleeping I would only be able to charge one at a time... As for a car charger, again not a bad idea, but I don't want to put the extra strain on my actual car battery and risk trapping myself at work.
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